<html>
    <head>
        <title></title>
        <meta charset="utf-8">
    </head>
    <body>
        <a href="./action.php?cmd=show1">show1</a>
        <a href="./action.php?cmd=show2">show2</a>
        <a href="./action.php?cmd=show3">show3</a>
    </body>
</html>